From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Tests with a new cylinder head and new sparking plug positions.
| Identifier | ExFiles\Box 65\4\ scan0312 | |
| Date | 18th September 1925 | |
| 48050 R.R. 493 (40 H) (SL 42 12-7-23). J.H., D.{John DeLooze - Company Secretary} EXPERIMENTAL REPORT. COPIES TO: RCJ BJ WOP By E.Da.{Bernard Day - Chassis Design} EF CJFOT RG{Mr Rowledge} Expl. No. K928 REF.Hs{Lord Ernest Hives - Chair}4/LG18.9.25. OBJECT OF TEST. TESTER. Tests with new cylinder head with new position for sparking plugs. A.C.Lovesey. CONDITIONS. Test bench. SUMMARY OF TEST. The results obtained so far from this engine are disappointing. The increase heating of the induction pipe have increased the tendency for detonation and we are not getting the benefit from the two opposed plugs we anticipated. The engine will shortly be fitted to a car and tested on the road. Hs.{Lord Ernest Hives - Chair} | ||